Advanced Study on Remote Measurement of Chemical Composition of Volcanic Gas by Infrared Spectroscopy

红外光谱遥测火山气体化学成分研究进展

• 批准号: 14340168
• 负责人: NOTSU Kenji
• 金额: $ 9.41万
• 依托单位: The University of Tokyo
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (B)
• 财政年份: 2002
• 资助国家: 日本
• 起止时间: 2002 至 2003
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-14340168/
• 关键词: volcanic gas; remote measurement; infrared absorption spectroscopy; FI-IR; eruption prediction; monitoring of udcauic activity; Aso volcano; Sakurajima vilcao; 太陽散乱光; 赤外発光分析; 赤外光源

Authors have been trying to develop a new remote measuring system to determine chemical compositions of volcanic gases by infrared absorption spectroscopy since early 1990' s, and first succeeded to determine the HCl/S0_2 ratio. Thereafter, more species such as CO, C0_2, COS, HF and SiF_4 could be detected. This research project aims to improve this system in order to apply more commonly, more easily and/or more quickly with keeping higher sensitivity. In 2002, a new FT-IR spectrometer (manufactured by Midac Co.) with high sensitivity was purchased and a new observation system for field use was made up. In 2003, after testing the specification of this system and calibrating each component in the laboratory, field observations were carried out at Aso and Sakurajima volcanoes. In our previous observations, we used hot rocks or hot ground behind the volcanic gas as an infrared light source. Instead, scattered solar light was first applied as an infrared light source, obtaining clear absorption spectra of SO_2 and HCI.

作者从90年代初开始尝试用红外吸收光谱法测定火山气体的化学成分，并首次成功地测定了HCl/SO_2比值。此后，更多的物种，如CO，CO_2，COS，HF和SiF_4可以检测到。本研究项目旨在改进该系统，以便在保持较高灵敏度的情况下更普遍、更容易和/或更快速地应用。2002年，一种新的FT-IR光谱仪（由Midac Co.制造）购置了高灵敏度的观测系统，组成了一套新的野外观测系统。2003年，在实验室测试了该系统的规格并校准了每个组件后，在阿索和樱岛火山进行了实地观测。在我们以前的观测中，我们使用火山气体后面的热岩石或热地面作为红外光源。相反，散射的太阳光首次被用作红外光源，获得了清晰的吸收光谱的SO_2和HCl。

项目成果

Mori T, Notsu K.: "Remote FT-IR monitoring of volcanic plume chemistry at Aso volcano, Japan"Pure and Applied Geophysics. (発表予定).

Mori T、Notsu K.：“日本阿苏火山火山羽流化学的远程 FT-IR 监测”纯粹与应用地球物理学（待提交）。

Mori T., Notsu K.: "Ground-based remote FT-IR measurements of volcanic gas chemistry at Sakurajima volcano, Japan"Geochimica et Cosmochimica Acta. 67. S304 (2003)

Mori T.、Notsu K.：“日本樱岛火山气体化学的地面远程 FT-IR 测量”Geochimica et Cosmochimica Acta。

野津憲治, 清水洋(編著): "地球化学講座 第3巻「マントル・地殻の地球化学」"培風館. 308 (2003)

Kenji Nozu、Hiroshi Shimizu（编辑）：“地球化学课程第 3 卷‘地幔和地壳的地球化学’”Baifukan 308 (2003)。

Notsu K., Mori T., Sumino H.: "High HCl flux Miyakejima volcano, Japan"Geochim.Cosmochim.Acta. 66(S1). A560 (2002)

Notsu K.、Mori T.、Sumino H.：“日本三宅岛火山高 HCl 通量”Geochim.Cosmochim.Acta。

Mori T., Sato M.Shimoike Y., Notsu K.: "High SiF_4/HF ratio detected in Satsuma-Iwojima volcano's plume by remote FT-IR observation"Earth Planet Space. 54. 249-256 (2002)

Mori T.、Sato M.Shimoike Y.、Notsu K.：“通过远程 FT-IR 观测在萨摩硫磺岛火山羽流中检测到高 SiF_4/HF 比率”地球行星空间。